<template>
    <div class="numbox-wrap">
      <div class="label" v-if="label">数量</div>
      <div class="numbox">
        <a href="javascript:;" @click="changeNum(-1)">-</a>
        <input type="text" readonly :value="modelValue">
        <a href="javascript:;" @click="changeNum(1)">+</a>
      </div>
    </div>
</template>

<script setup>
import { useVModel } from '@vueuse/core'

const props = defineProps({
    label: {
      type: String
    },
    modelValue: {
      type: Number,
      default: 1
    },
    min: {
      type: Number,
      default: 1
    },
    max: {
      type: Number,
      default: 100
    }
})

const emit = defineEmits(['change'])

const num = useVModel(props, 'modelValue', emit)
const changeNum = (value) => {
  const newValue = num.value + value
  if (newValue < props.min) return
  if (newValue > props.max) return
  num.value = newValue
  emit('change', newValue)
}

// defineExpose({
//   num,
// })
</script>

<style scoped lang="scss">
.numbox-wrap {
  display: flex;
  align-items: center;
  .label {
    width: 60px;
    color: #999;
    padding-left: 10px;
  }
  .numbox {
    width: 120px;
    height: 30px;
    border: 1px solid #e4e4e4;
    display: flex;
    a {
      width: 29px;
      line-height: 28px;
      text-align: center;
      background: #f8f8f8;
      font-size: 16px;
      color: #666;
      &:first-of-type {
        border-right:1px solid #e4e4e4;
      }
      &:last-of-type {
        border-left:1px solid #e4e4e4;
      }
    }
    input {
      width: 60px;
      padding: 0 5px;
      text-align: center;
      color: #666;
      border: none;
    }
  }
}
</style>